Solar Geom Calc

Solar Geometry Calculator
Latitude:	Longitude:	UTC Start Date:	UTC End Date:	Local Time Zone:	Interval (secs):

Local Date Format: Show GMT: Airmass: Solar Zenith Angle: Elevation: Azimuth:
Atmospheric Refraction Correction:

Local UTC     SolarZen and Elev Uncorrected for Atmospheric Refaction
yyyy MM dd HH:mm      AirMass   SolarZen       Elev       Azim
2024 06 09 16:00      1.32984   41.31552   48.68448  100.47931
2024 06 09 17:00      1.15822   30.37078   59.62922  115.00678
2024 06 09 18:00      1.07151   21.12604   68.87396  139.09701
2024 06 09 19:00      1.04516   16.98642   73.01358  180.44579
2024 06 09 20:00      1.07251   21.26358   68.73642  221.51506
2024 06 09 21:00      1.16046   30.55924   59.44076  245.34871
2024 06 09 22:00      1.33398   41.51787   48.48213  259.77022
2024 06 09 23:00      1.65597   52.94971   37.05029  270.36249
2024 06 10 00:00      2.30066   64.38190   25.61810  279.43947
2024 06 10 01:00      3.92916   75.52791   14.47209  288.11455
2024 06 10 02:00     12.13895   86.12601    3.87399  297.07544
2024 06 10 03:00     -1.00000   95.86830   -5.86830  306.85657
2024 06 10 04:00     -1.00000  104.35537  -14.35537  317.91562
2024 06 10 05:00     -1.00000  111.07505  -21.07505  330.57512
2024 06 10 06:00     -1.00000  115.44219  -25.44219  344.82903
2024 06 10 07:00     -1.00000  116.94882  -26.94882    0.12017
2024 06 10 08:00     -1.00000  115.38927  -25.38927   15.40091
2024 06 10 09:00     -1.00000  110.97614  -20.97614   29.62887
2024 06 10 10:00     -1.00000  104.22061  -14.22061   42.25725
2024 06 10 11:00     -1.00000   95.70746   -5.70746   53.28771
2024 06 10 12:00     11.75447   85.94688    4.05312   63.04614
2024 06 10 13:00      3.88082   75.33624   14.66376   71.99108
2024 06 10 14:00      2.28425   64.18188   25.81812   80.65759
2024 06 10 15:00      1.64821   52.74466   37.25534   89.73591
2024 06 10 16:00      1.32976   41.31130   48.68870  100.34816

Latitude:

-90.0 to +90.0, Negative for South, Positive for North.

Longitude:

-180.0 to +180.0, Negative for East, Positive for West.

Start Date:

Enter start date in the format yyyy-MM-dd HH:mm [UTC]

End Date:

Enter end date in the format yyyy-MM-dd HH:mm [UTC]

Interval:

The internal (in seconds) between successive solar calculations.

Date Format:

yy[yy] Format for years. Two or four digits.
M[MM] Format for months. MM=01-12, MMM=Jan-Dec, MMMM=January-December
d[d] Format for day of month. One or Two digits.
D[DD] Format for day-of-year. One to three digits (zero padded).
HH[or hh] Format for hour-of-day. HH=24 hr clock, hh=12 hr clock.
mm Format for minutes. mm=00-59.
ss Format for seconds. ss=00=59.
a AM/PM.
z Timezone Acronym.
Z Timezone hours offset. Examples: +0600, -0200

Examples:
yyyy/MM-dd_DDD hh:mm:ss aa
yyyyMMdd[DDD]HHmmss

Air mass

If the sun is below the horizon, Air mass = -1.0000. Toggle the checkbox to enable/disable column in report.

Air mass Calculation

Airmass = 1.0/(cos(90 - elev) + 0.50572 * (6.07995 + elev)^-1.6364)

Solar Zenith Angle

Solar elevation in Degrees from zenith (90°). Angles are corrected for atmospheric diffraction. Toggle the checkbox to enable/disable column in report.

Elevation:

Solar elevation in Degrees above horizon (0 degrees). Angles are corrected for atmospheric diffraction. Toggle the checkbox to enable/disable column in report.

Azimuth:

Sun azimuth, 0° = N, 90° = E, 180° = S, 270° = W. Toggle the checkbox to enable/disable column in report.

Solar Geometry Calculator